MP4 to MP3 Converter

convert MP4 files to MP3 format locally in your browser. Your files never leave your device.

Upload MP4

Drag and drop or click to browse

Step-by-step guide: How to convert MP4 to MP3

How to convert MP4 to MP3

Covertfily provides a seamless, privacy-first way to convert your MP4 files to MP3. Unlike traditional online converters, our technology performs the conversion directly in your web browser. This means your data is never sent to our servers, keeping your sensitive information 100% private.

Why convert locally?

Privacy

Your files never touch a server.

Speed

No upload or download wait times.

Security

No cloud storage risk for sensitive files.

FAQ

Is it free?

Yes. Covertfily is free and open-source under the MIT license.

What is the maximum file size?

Since it runs on your device, it depends on your browser's memory, but most files up to 100MB work perfectly.

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